package com.zzyl.framework.config;

import com.zzyl.framework.config.properties.PermitAllUrlProperties;
import com.zzyl.framework.security.filter.JwtAuthenticationTokenFilter;
import com.zzyl.framework.security.handle.AuthenticationEntryPointImpl;
import com.zzyl.framework.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.ProviderManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 * @author ruoyi
 */
@EnableMethodSecurity(prePostEnabled = true, securedEnabled = true)
@Configuration
public class SecurityConfig {
    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;
    
    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;
    
    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;
    
    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;
    
    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;
    
    /**
     * 允许匿名访问的地址
     */
    @Autowired
    private PermitAllUrlProperties permitAllUrl;
    
    /**
     * 身份验证实现
     */
    @Bean
    public AuthenticationManager authenticationManager() {
        DaoAuthenticationProvider daoAuthenticationProvider=new DaoAuthenticationProvider();
        daoAuthenticationProvider.setUserDetailsService(userDetailsService);
        daoAuthenticationProvider.setPasswordEncoder(bCryptPasswordEncoder());
        return new ProviderManager(daoAuthenticationProvider);
    }
    
    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Bean
    protected SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
        return httpSecurity
                       // CSRF禁用，因为不使用session
                       .csrf(csrf -> csrf.disable())
                       // 禁用HTTP响应标头
                       .headers((headersCustomizer) -> {
                           headersCustomizer.cacheControl(cache -> cache.disable())
                                            .frameOptions(options -> options.sameOrigin());
                       })
                       // 认证失败处理类
                       .exceptionHandling(exception -> exception.authenticationEntryPoint(unauthorizedHandler))
                       // 基于token，所以不需要session
                       .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                       // 注解标记允许匿名访问的url
                       .authorizeHttpRequests((requests) -> {
                           permitAllUrl.getUrls()
                                       .forEach(url -> requests.antMatchers(url)
                                                               .permitAll());
                           // 对于登录login 注册register 验证码captchaImage 允许匿名访问
                           requests.antMatchers("/login","/register","/captchaImage","/member/**","/ws/**")
                                   .permitAll()
                                   // 静态资源，可匿名访问
                                   .antMatchers(HttpMethod.GET,"/","/*.html","/**/*.html","/**/*.css","/**/*.js","/profile/**")
                                   .permitAll()
                                   .antMatchers("/swagger-ui.html","/swagger-resources/**","/webjars/**","/*/api-docs","/druid/**")
                                   .permitAll()
                                   // 除上面外的所有请求全部需要鉴权认证
                                   .anyRequest()
                                   .authenticated();
                       })
                       // 添加Logout filter
                       .logout(logout -> logout.logoutUrl("/logout")
                                               .logoutSuccessHandler(logoutSuccessHandler))
                       // 添加JWT filter
                       .addFilterBefore(authenticationTokenFilter,UsernamePasswordAuthenticationFilter.class)
                       // 添加CORS filter
                       .addFilterBefore(corsFilter,JwtAuthenticationTokenFilter.class)
                       .addFilterBefore(corsFilter,LogoutFilter.class)
                       .build();
    }
    
    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }
}
